Meteoritical Bulletin: Entry for Northwest Africa 10139

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Northwest Africa 10139

Basic information

Name: Northwest Africa 10139
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10139
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass: 80 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	Ureilite
Recommended:			Ureilite [explanation]

This is 1 of 623 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Comments:

Approved 23 May 2015

Writeup

Writeup from MB 104:

Northwest Africa 10139 (NWA 10139)

(Northwest Africa)

Purchased: 2014 Mar 15

Classification: Ureilite

History: Purchased by Jan Woreczko from a local meteorite dealer in Erfoud, Morocco.

Petrography: The meteorite shows a cumulate texture of blocky, up to 3 mm sized Cr-rich olivine, augite and rare poikilitically enclosed orthopyroxene crystals. It contains flaky graphite; olivine displays characteristic reduced rims.

Geochemistry: Reduced rims in olivine: Fa_3.7-6.9; Cr₂O₃ in olivine: ~0.5 wt%

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Erfoud, Morocco
Date:	P 2014 Mar 15
Mass (g):	80
Pieces:	4
Class:	Ureilite
Shock stage:	low
Weathering grade:	low
Fayalite (mol%):	11.1±0.3 (n=16)
Ferrosilite (mol%):	9.9±0.1 (n=16); 6±0.1 (n=16)
Wollastonite (mol%):	4.9±0.1 (n=16); 37.6±0.1 (n=16)
Classifier:	A. Greshake, MNB
Type spec mass (g):	18.8
Type spec location:	MNB
Main mass:	Jan Woreczko; Woreczko & Wadi Meteorites Collection, Warsaw, Poland, website: www.woreczko.pl
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full

Find references in NASA ADS:
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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Woreczko Jan & Wadi

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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